docs: def create(self):
          """ Creates the necessary display for this form """
          self.add_handlers({'^E': self.quit, '^Q': self.quit})
          to_delete = self.old_instances - self.new_instances
          self.add(npyscreen.Textfield, value='Select which instances to delete'
                   ' (you must select ' + str(to_delete) +
                   ' instance(s) to delete):', editable=False, color='GOOD')
          self.del_instances = self.add(InstanceSelect,
                                        values=self.cur_instances,
                                        scroll_exit=True, rely=3,
                                        instance_num=to_delete)